unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, ExtCtrls;

type
  TForm1 = class(TForm)
    Panel1: TPanel;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Panel1DblClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  pos: TRect;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
begin
   pos:=panel1.BoundsRect;
   MapWindowPoints(handle, 0, pos, 2); // 座標換算
   ClipCursor(@pos);
end;

procedure TForm1.Panel1DblClick(Sender: TObject);
begin
   close;
end;

end.